Mechanical sheet stop for smut-sheet machines



.l. E. GI LBERT AND G. W. HARRIS. MECHANICAL SHEET STOP FOR SMUT SHEET MACHINES.

APPLICATION FILED JAN- 39, 1920.

Patented J 11ne127, 1922.

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' APPLICATION FILED JAN.30, 1920.

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I APPLICATION FILED JAN. 30, I920.

PatentedJune 27, 1922.

5 SHEETS-SHEET 3- %N llIlIlllI I HI I I I HHI H J. E. GILBERT AND G. W. HARRIS. MECHANICAL SHEET STOP FOR SMUT SHEET MACHINES- APPLJCATJON FILED JAN. 30. 1920'. 1,420,653.

Patented June 27, 1922.

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APPLICATIONFILED JAN. 30, 1920.

1,420,653, PatentedJune 27,1922.

5 SHEETSSHEET 5- JAIvIES E. GILBERT AND GLENN WI HARRIS, OF CHICAGO, ILLINOIS, ASSIGNORS TO GILBERT SLIP SHEETING I-IIACHINE COMPANY, OF CHICAGO, ILLINOIS, A COR- PORATION OF ILLINOIS.

MECHANICAL STOP FOR SMUT-SHEET MACHINES.

Specification of Letters Patent. Patented June 27, 1922 Application filed January 30, 1920. Serial No. 355,115.

To all whom it may concern:

Be it known that'we, JAMEs E. GILBERT 1 fication.

Patent Number 966,739 to J. E. Gilbert, issued August 9, 1910, illustrates and claims a machine for taking care of sheets of printed or lithographed matter between the time they receive the impression of ink and the time they are sufliciently dried to prevent offsetting when placed on a pile. Broadly speaking that machine includes the use of an intermittently moving and succussively folding strip of cloth between which successive sheets of printed paper are placed immediately on being printed, and in which they are carried until sufiiciently dry to'be automatically delivered from the machine, all as will more fully appear from the inspection of said patent.

In that machine a section of a continuous strip of cloth is temporarily stretched between supports during which time it is referred to as a print sheet support. While this section of cloth is being fed into position in the support the paper to be taken care of travels along and is carried by it to the position where it is to be smutted by the succeeding section of cloth. hen a print sheet support, either a section of cloth in the machine of said prior patent or a separate independent sheet, as is pos sible in other machines, is fed to a fixed position preparatory to smutting and paper is carried by said print sheet support a dlfficulty arises in that the sheet of carried paper does not, unaidedstop with the print sheet support inany accurately'predetermined position. In fact, due to air currents, momentum, and other elements unnecessary to mention it is apt to take almost any sort of a position it chooses.

The object or" this invention is to provide mechanical means applicable both to moving print sheet-supports generally carrying paper to a stopped position and more particularly to the print sheet support mechanism of said prior patent, which will as the print sheet support comesto rest, accurately stop the sheet of paper and position it on the print sheet support and for practical purposes hold it there until the covering smut sheeting is sufiiciently in place i so that external, temporary holding means is no longer required. The invent-ion con sists in means for accomplishing these 0bects, which can be comparatively easily and inexpensively built, which is satisfactory in use and is not readily liable to get out of order. More in detail the invention 'consists in many features and details of construction more fully set forth in the specification and claims.

numerals denote like parts throughout the several views,

Figure 1 is a side view of a modernized machine of thegeneral character shown in said Gilbert patent, showing particularly and quite in detail the operating mechanism Referring to the drawings in which like for driving the two more or less independent I partsof the mechanism of this invention.

. FigureQ is a reversed plan View of the machine shown in Figure l. r t Figure 3' is an enlarged detail View of many of the essential operating parts ofthe machine as seen when the operator stands behind the structure of Figure 1 and loo-ks.

toward it, this view being taken on the line 1 r 3-3 of Figure 2.

Figure 4; is a plan view of a folded section of the smut'sheet material showingthe tion.

Figureo is an enlarged detail view show w positions takenon the FigurelO is a detail viewof a connection between lever 36 and wheel- 44: which op-.

crates it. p v

A machine to which the device of this invention in its preferred form is applied is mounted in a general frame 20, corresponding in general terms to that of said manner in' which a crossbar is attached thereto in the preferred form. of construeand 8 are" changed. position Gilbert patent. The main frame 20 has mounted inside it four vertical slides, two at the front being designated 22 and two at the rear being designated 2l, corresponding in general function to the channel irons la and 4.5 of the Gilbert prior patent. A continuous piece of cloth, heretofore referred to, and designated in Figure 1 by general numeral 26 is in performing the work of smut sheeting folded into these slides as shown in Figure 1 and is temporarily retained thereinbycross bars 28 entering the slots insaid slides, as shown in various figures. The complete mechanism for hand" ling the cloth as is done in said prior patentbeing unnecessary to illustrate the features of this invention is only shown in the drawings in so far as is required to make. the device of this invention" clear.

Each cross bar 28 is pivoted on the cloth 26 at a predetermined point thereon through the use of a pivot rod or wire 30 running through a loop in the cloth and ears on the bar, the same being the subject matter of another patent application, Serial Number 382,142, filed ll lay 17, 1920.

In the general machine a suitably actuated continuously rotating power shaft 82 is provided for operating the various mechanisms which will be referred to in this application. The cloth 26 is, at the top of the machine, actuated in the general manner as set forth in the Gilbert patent through mechanism driven by shaft 32. Pivoted at at near the lower portion of the frame 20 and on opposite sides thereof are vertically extending parallel arms 36, each having in them an elongated slot 38 entered by a square sliding block 40 driven on a stud 4L2 fastened in the face of a rotatable disk a l driven by shaft 32. Pivoted to the upper end of each lever 36 at 4L6 is a connecting rod 48 carrying at its opposite end one end of the cloth moving roller 50. Each end of this roller is guided for approximatc horizontal reciprocation by rollers 52 movable in a cam track 54. This cam track 5 1- and the lever mechanism 86 are the subject matter of a companion patent application,

fierial Number 370,261, filed March 31, 1920.

The lever mechanism 36 is so driven by shaft 32 that the roller 50 starts from a point somewhat to the left of that shown in Figure 3 to begin to fold in the cloth 26, and thereafter moves successively through the positions of Figures 3, 5 and 7 to completely fold the cloth and insert an adjacent cross bar 28 in the front slides 22, as shown in Figures 7 and 8. Thereafter it withdraws through the dotted line position of Figure 8 and then the full line position of Figure 8 to original position, all as more fully set in the original Gilbert patent.

The connection between the disk as and the lever 36 is so arranged with relation to the speed of the printing press to which the device is applied that the feeding of the cloth forward to the point where it is locked in the front slides occupies approximately 225 of the rotation of the diskle and the return stroke requires approximately 135, as will more fully appear in said companion application. These relative proportions are merely selected to conform to present press practice. 1

In correspondence with the description and terminology in said'prior Gilbert patent that portion of the cloth 26 which, when the parts are in the position of Figure 3, carries the paper 56 to be smutted, is technically designated th print sheet support and the portion of the cloth which follows it and is laid over that sheet of paper 56' for the purpose of smutting, is technically called the smut sheet. l/Vhere occasion occurs in the drawings for referring to these parts the print sheet support is designated 26 and the smut sheet is designated 26 The machine thus far described is so '10- cated that the printing press which delivers sheets of paper to the machine is on the left of all figures except Figure 1 and Figure" 3 shows a sheet of paper 56 just put in place on the print shee support 26 at'the extreme left of that figure and ready to be carried into the machine. As noted in the beginning the problem to be solved is to so arrange matters that when that paper finally is enclosed by the next following smut sheet it will be in a oesired predetermined position in the machine such, for instance, as is shown by the regularly piled sheets of paper 56, appearing in the center of Figure 3, borne upon by their adjacent smut sheets.-

in carrying out this result the mechanism now to be described is used.-

On each side of the upper portion of the frame of the machine, and adjacent to the point where the control of the paper is to take place, is mounted a plate 58 having extending horizontally of it a substantiallv straight horizontal cam track 60. in each one of these cam tracks is a block or crosshead 62, mounted on the end of a horizontal rod 6- on one of whose sides in the particular case here illustrated the lower side, is cut a rack 68 meshing with gears 70 one on each side of the machine. These two gears are carried-by a common shaft '22 which in turn carries at one end a pinion 7 L meshing with the rack 76 onthe end of v a rod 78, driven through "the agency of bell crank 80 which carries a roller 82 traveling on the face of cam Sal mounted on shaft 32, heretofore referred to; This cam moves rod 78 and all attached parts described in one direction, while a suitably located spring 86 moves these parts in the opposite direction whenever the position of the cam per,- mits such motion. The result of the con- Slidablb Extending between these two oppositely disposed crossheads 62 and joi'lrnaled therein is a rotatable shaft 88 carrying atsuitable points along its length traveling stop fingers 90, two being shown "in the particular case here illustrated, adapted when moved to proper position to engage the advancing edge of the sheet of paper c'arriedby a moving'print sheet support and control it as hereafter described. On one or both ends of shaft .88 as the constructor may elect, is a lever arm 92 carrying at its end a cam roller 94: traveling in an irregularly shaped elongated cam slot 96 formed in a plate or block 98. This cam slot 96 in the particular case here illustrated rises at its opposite ends 96 and 96 todifferent heights above the general level of the cam slot. The result of this irregular shape of cam slot 96 is that as shaft 88 is reciprocated, by cross head 62, as heretofore described, it is also given a properly timed partial rotation or rocking movement to cause it to first assume the dotted line position of Figure 5 wherein the fingers 90 are elevated so that the bar 28. which is just in advance of the sheetof' paper to be controlled, can pass under the fingers 90. As soon as the bar has passed these fingers 90 the cam immediately lowers the fingers in frontfof the paper. on the advancing print sheet support immediatelyfollowing the bar, whereupon the fingers and paper and print sheet support travel alon together to the right in Figure 5 until the full line position of Figure 5 is reached. In approaching this latter position the end 96 of the cam slot has caused the fingers 90 to elevate themselves enough to allow the roller to pass under them as it finishes its stroke to the right and starts to go back as indicated in Figure 8. In other words this cam is so shaped that it maintains the ends of fingers 90 in engagement with the Figure 5, and the roller in extreme right hand position of Figures 7 and 8. I

As roller 50 is during the voperation of moving the cloth into engagement with the front slides necessarily in between two horizontal portions of cloths, viz, a print sheet support and its adjacent smut sheet, the roller necessarily until the parts reach the position of Figure 7 holding these two pertions of cloth separated one from the other,-

and when the roller retires beyond the full line position of Figure 8 the upper portion of cloth necessarily drops down as is clearly indicated'in Figure 8 a'distance equal'to the thickness of the roller 50. As the cam mechanism just described does not permit the fingers 90 to drop lowerfthan substantially the position shown in Figure 8, it is entirely obvious that they cease to control the paper 56 on the print sheet support which is being put in final position. It is therefore, necessary to provide an auxiliary paper stop for controlling the paper on the print sheet sup port during this period of drop from the 7 ated by a crank arm 102 moved bya rod 104: controlled in one direction by a spring 106 and in the other direction by cam roller 108 traveling on theface of a suitably shaped cam llOon shaft 32'." Roller ,108'is partially controlled by being mounted on a'lever arm 112 pivoted at 114' to the'frame. Rigidly mounted on shaft are a pair of packer arm s 1l6 which move between the position of Figure 5' in which the cross bars 32 are-free to move fromthe left over into 22 to. the positions of Figures 7 and;,8. in which these packer arms'press the crossbar down into the front slides throughwhich they operate as set forth in the said prior Gilbert patent. 'Rigidly mounted on shaft 100 are lugs 11'8. Adjacent to each such lug is a pivoted block 102 with arm 1 22 attached, thelatter adapted to engage the cloth 26; as

position and ready todescend the front slidev I needed, as hereafter described. These blocks Y with attached arms 122 move by gravity: downward from the dotted line of Figure 7 through full line position of Figure 7 to the position of Figure 8, and are returned to dotted line'position of Figure 7 by the member 118 engaging the adjacent. block I 120 when the shaft 100 is moved in a clockwise direction as viewed in Figure? under the control'of cam 110. Thecam 110 is'so proportioned and timed that the lever arms 122 and116 occupy the full line position of Figure 8 all the vtime except when the roller 50 is depositing a cross bar in the front slides during which period these levers are elevated as described so as to permit the pasv I thecross bar is let into the vertical slides 7 should cOmegradualIy to a stop. The cam St is therefore, carefully designed so that the traveling stop members 90, heretofore described, will move proportionately to this movement of the roller and will come into operative engagement with the paper in passing from the dotted line to the full line position of Figure 5, in a gentle manner without injuring the edge of the paper.

Having thus described our invention what we claim as new and desire to secure by Letters, Patent, is

1.. In mechanism of the class described, a print sheet support, means, for moving it through the machine to a desired stopping point, a stop finger for engagingthe print sheet support to position paper thereon, and means operative only during the final portion of the movement of the print sheet support for moving said finger in the'direction of movement of the support and in unison therewith, for the purposes set forth.

. 2. In mechanism-of the class described, a print sheet support, means for moving it through the machine to a desired stopping point, a stop finger for engaging the print sheet support to positionpaper thereon, and means for moving said finger in the direction of movement of the support and-in unison therewith, and means retaining the finger clear of the support until it is required to do its. paper stopping work as the support and paper stop, for the purposes set forth.

3., In mechanism of the class described, a print sheet support, means for moving it through the machine to a desired stopping point, a stop finger for engaging the print sheet support to position paper thereon, and means operative only during the final portion of the movement of the print sheet support for moving said finger in the direction of movement of the support and in unison therewith, and means retaining the finger clear of the support until it is required to do its paper stopping work as the support and paper stop, for the purposes set forth.

4:. In mechanism of the class described, a print sheet support and mechanism for moving it through the machine to a desired stop-- ping point, stop, fingers pivotally and reciprocatively mounted, means reciprocating salid fingers in unison with the print sheet support to position paper on the print sheet sup port as it stops, automatic means rotating said fingers toward and from the print sheet support, as required during their reciprocating movement to avoid obstructions carried by the support adjacent to the fingers, and means for so simultaneously, automatically moving the print sheet support and the fingers.v

5. In mechanism of the class described, means for moving a print sheet support through the machine to av desired stopping point, means at a point on the print sheet support for securing said support at said stopping point, paper engaging fingers traveling with the print sheet support during the latter portion of its movement as it approaches the stop position to engage paper on the support and position it, as the support comes to rest, and automatic means moving the print sheet support and said fingers adapted to momentarily move said fingers out of engagement with the print sheet support to allow said securing means to pass under the fingers and on to securing position, for thepurposes set forth.

6. In mechanism of the class described, a print sheet support movable through the machine to a predetermined position of rest, securing mechanism for fastening the print sheet support in the last mentioned position, a stop finger carrying mechanism reciprocatable, generally parallel to the movement of the print sheet support, during the last portion of its movement fingers on said carrier mechanism pivotally mounted for movement into and out of engagement with the print sheet support, .and a cam mechanism operated by the general movement of the machine which holds said fingers clear of the. print sheet support until said securing mechanism has passed said fingers and then permits said fingers to engage the print sheet support during the remainder-of the movement of the finger carrying mechanism and the print sheet support torest position.

7. In mechanism of the class described,

a print sheet support movable through the p 7 machine to a predetermined position of rest, supporting bar for fastening the print sheet support in the last'mentioned position, a stop finger carryingmechanism reciprocatalole. generally parallel to the movement of the print sheet support during the last portion of its movement, fingers on said carrier mechanism pivotally mounted for movement into and out of engagement for the print sheet support, and a cam mechanism operated by the general movement of the machine which holds said fingers clear of the print sheet support until said support ing bar has passed said fingers and then permits said fingersto el igage the print sheet support during the remainder of the movement of the finger carrying mechanism and the print sheet support to rest position.

8. In mechanism of the class described, a print sheet support and means for moving it through. the machine to a predetermined stopping point, paper retaining fingers mounted for movement parallel with the support during the latter portion of its movement to rest position and other fingers movable to engage the paper on the support andv relieve the first fingers as the support comes to rest, and automatic meansfor moving the support and the two sets of fingers in coordination with each other.

v of motion to a final stopping point, paper retaining fingers movable in unison with the support durlng the latter port on of its first said movements to retain the paper thereon, and another set of fingers movable to retain said paper in said position'while said support makes its second movement,

and means coordinating the movements of the support and said respective sets of fingers, for the purposes set forth.

107 In mechanism of the class described, a

print sheet support, means for moving it in one general direction, to a predetermined stopping point in the machine and'for then moving it at an angle to the first direction of motion to a final stopping point, paper retaining fingers movablev in unison with the support during the latter portion of its first said movements to retain the paper thereon, and another set of fingers movable to retain said paper'in said position while said support maires its second] movement, 7 means .90- ordinating the movements of the support and said respective sets of fingers, a locking bar carried by the forward endof the print sheet support, and means causing each ofsaid sets of fingers to move so as. to allow said bar to pass them before they begin their paper engaging functions.

11. In mechanism of the class described, a frame having a pair of vertical slides placed opposite each .other,-a print sheet support carrying a bar to beultimately deposited in said slides movable from a point at an angle to said slides, through the machinetoward said slides, means carrying said print sheet support in said path to deposit said bar in said slides, a paperretaining finger mounted for reciprocation parallel to. the line of movement of the print sheet support during that portion of its stroke where it approaches said slides, means retaining said finger remote from said print sheet support until said retaining bar has passed the finger and for then moving said finger into engagement with the print sheet support, means then moving said finger in unison with the sup-c port to position paper as the support reaches itsfinal position, a supplemental set of fingers pivotally mounted at a point ad acent to said slides and free of the movementof position on the print sheet support, means withdrawing the print sheet support moving means, while the last mentloned fingers re tain the paper on the print sheet support, and automatic mechanism coordinating the j movements of chine.

the variousparts of thema- 12. In mechanism of the class described,

in combination with a frame,'a generally f of travel of the crossheads, a shaft in the frame ofthe machine, at a point remote from j the path of travel of said crossheads, a fine v ger pivoted onsaid shaft for rotation thereme; said print sheet support 'froma point with, a print sheet support, means for mov} outside the machine, first in a path of travel parallel to the path of said crossheads, and ultimately in the path in proximity to the movement of said second fingers, and means for coordinating the movement'sof the print sheet support and the two sets offingers whereby'a' sheet of paper on the print sheet support is engaged and stopped by the first setof fingers, during the first movement of theprint sheet support and is held in place bythe second set of fingers during the final} movement of the print sheet support. 1 13'. In mechanism of the class described'in combination with a r suitable supporting frame,an endless belt of smut sheet -'material, mechanism for folding supcessive portions tr belt into zig-zags, mechanism for f in combination'with suitable supporting 1 frame, an endless belt of smut sheet material, mechanism for folding successive por-g' V j i tions :of the belt into z'ig 'zags, mechanism for detachably securing the ends of the zigzags tosaid frame and mechanical'fingers following the to be secured portions of the 'belt as they move to secured position for, en- .jjj 'gagingand positioning a sheet ofpaper while; said paper'iis carried-by a portion'of belt beingfsecured in saidzigmg form, and means holding sa d fingers away from the belt while devices on the belt for securing the end of a given zig-zag into the frame are passing said fingers to'the frame for the purposes set' forth; I

15. In mechanism ofthe class described, a print sheet support, means for moving it through the machine to a desired stopping point and for then further moving it at an angle thereto, a stop finger meeting the print sheet support as it comes to said stopping pointand following said print sheet support during'said final movement, to retain paper in desired position on the print sheet support during said final movement.

16. In mechanism of the class described, a print sheet support, means for moving it through the machine to a desired stopping point, and for then further moving'it at an angle to said first direction of movement, av finger meeting said print sheet support, at said stopping point, means moving said finger With said print sheet support in unison With it during said second movement to position the paper on said print sheet support during said movement and; means thereafter returning said finger to original position.

- '17. In mechanism of theclass described, a print sheet support, means for moving it through the machine to a desired stopping .point, and means for thereafter moving it at an angle to said first movement, a finger engaging the print sheet support at the time it reaches said stopping point to position the paper thereon, means for moving said finger in unison With the print sheet sup- :port during saidsecond movement to retain the paper in the position thereon, mechanism retainingsa'id finger clear of the print sheet support until it reaches said stopping point, means then moving said finger into engagement With the print sheet support and retaining it there during said second movement of the print sheet support, and means finally returningsaid finger to 'original posltion. i

18. In mechanism of the class described, a printsheet support movable through the machine to a. predetermined position of rest, and then-movable at an angle thereto to a secondgposition, means carried by the print sheet support for detachably fastening the print sheet support in said position of rest, and for guiding it during its movement to said last mentioned position, fingers pivotally mounted adjacent to the machine to swing to engage the print sheet support as it reaches said firstmentioned position of grestand to move in contact With the support to original position.

said fingers to engage and follow the print sheet support during the remainder o'fits movement, as: described.

19. In mechanism of. the class described, a print sheet support movable through the machine to a predetermined position of rest, and then movable at an angle thereto to a second position, means carried by the print sheet support for detachably fastening the print sheet support in said position of rest, and for guiding it during its movement to said last mentioned position, fingers pivotmovement, and a cam mechanism for finally i returning said fingers to original position.

20. In mechanism of the class described, a relatively flat print sheet support, means for moving it at an angle to. its principal ,L. 4. plane, a stop finger meetmg the PIlIlt sheer support and following said print sheet support during said movement, to retain paper in desired position on the print sheet support during said movement;

21'. In mechanism of the class described, a relatively fiat print sheet support, means for moving it at an angle to its principal plane, a finger meeting said print sheet support, means moving said finger With [said said movement to position the paper on said print sheet support during said movement, and means thereafter returningsaid finger In Witness whereof We have hereunto subscribed our names.

JAMES E. GILBERT. "GLENN W. HARRIS.

Witnesses:

NAT-HAN GAZIN,

MILDRED TURNER.

print sheet support in unison with it during 

